3 Months later, Muffler has carboned up nicely I assume, It has calmed down a lot. Still rattles the shed when starting up and has a nice deep idle note thanks to the rather expensive MagnaFlow muffler. Worth every cent.
Less drone on highway. Using less fuel last couple of weeks, and sounding a bit more civilised. Although both of those could be my right foot???
Once again, huge thanks to Rob Bliss Exhausts. The only place honest enough with me to suggest the mods I performed, even though they probably made less money. Standard factory SS pipework except the y pipe and the single muffler, sounds a lot better and deeper than any other FG XR6T ute I have heard. Total cost including 2 new awesome looking tips under $600. Too many people get fooled into spending way more for full cat back replacement, then end up with inferior pipe work (stock is SS). Unless chasing big horsepower gains through other mods, then full system replacement is warranted.
I would record sound and post it, but phone mic and computer speakers do no justice.